head to head · open source
fastapi vs mocker-api
fastapi has 102,402 GitHub stars, 9,903 forks, 78 open issues and last shipped 4 days ago. mocker-api has 500 stars, 64 forks, 27 open issues and last shipped 5 months ago. fastapi leads on adoption by 20,380% (102,402 vs 500 stars). fastapi is written in Python under MIT; mocker-api is written in TypeScript under MIT. fastapi has attracted 10% as many forks as stars, mocker-api 13%. fastapi was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| fastapi | mocker-api | |
|---|---|---|
| GitHub stars | ★ 102K | ★ 500 |
| License | MIT | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-09-14 | 2026-04-21 |
| Forks | ⑂ 9.9K | ⑂ 64 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick fastapi if
- You weight community size — 102K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick mocker-api if
- You want the mocker-api feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and mocker-api fits your workflow better
About fastapi
FastAPI is an MIT licensed, high performance Python web framework for building APIs with standard Python type hints, aimed at Python developers and teams that need production ready HTTP services with automatic OpenAPI documentation.
read the full fastapi overview →
About mocker-api
mocker api is an MIT licensed TypeScript tool that creates mock endpoints for REST APIs, built for developers who need to test an application without running the actual REST API server.
read the full mocker-api overview →
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Frequently asked questions
Is fastapi or mocker-api more popular?
fastapi has 102,402 GitHub stars and mocker-api has 500. fastapi has the larger community by that measure.
Are fastapi and mocker-api free?
Both are open source. fastapi is licensed under MIT and mocker-api under MIT. Neither carries a licence fee.
What is the difference between fastapi and mocker-api?
fastapi is written in Python and mocker-api in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, fastapi or mocker-api?
Choose fastapi if you want the larger community (102,402 stars) or its MIT licence terms. Choose mocker-api if its feature set, stack or MIT licence fits better. Both are self-hostable.